Topic: question regardin TB spacer

[andpgud]

Hi there guys.
Can you tell me specs of the TB spacer. I am about to make me one.
Best reg.

[dwtaylorpdx]

They vary form .75" tall to 1.25" and you match the hole and bolt pattern of the new throttle body.

I always wanted to machine a block of AL about 6" long then cut it into varying lengths and do a series of
dyno pulls just to see, now I just need the money for the dyno time... :)

Dave

[andpgud]

So what would be the best one would you think?
What if I have a tb from a 4 liter car and the other hole is smaller. What do I do?
How big is the tb on a 4 liter one?

[sharpxmen]

So what would be the best one would you think?
What if I have a tb from a 4 liter car and the other hole is smaller. What do I do?
How big is the tb on a 4 liter one?

i have not seen one thicker than 1.5'', they are usually like he^ said about 1'' or 1-1/4 so if you're around that you're in the ballpark of what everyone else is using.

[andpgud]

What do you think of this one

[dwtaylorpdx]

Mine is 1", its 62MM bore, but I am running a stock 4.0 TB on it. After you make the spacer, you need to bolt it on the manifold and mark the manifold for grinding/cutting in the bore. I used shop rags covered with grease stuffed in the manifold runners  to block the shavings from going down in the motor and used a shop vac while I did the cutting with a 1/4 in electric die grinder and a carbide burr.

The spacer moves the power band it does not really add power. With mine my power comes on at 2500 and pulls to about 5000, without the spacer the power bad was about 3200 to about 6200. (My motor is built for revs so I can get away with this I don't recommend it on a stock engine)

I pull the spacer out if I'm headed down to play in the dunes. I'd like to try a 2" spacer for crawling..

Dave

[andpgud]

I drive the car mainly on roads, Just want more power.
Should I then say no to the spacer?
Can anyone give me the specs so I can to it without the TB. ! inch wide.
Where do I drill the holes?

[sharpxmen]

What do you think of this one

that's a throttle body, i thought you were asking about a spacer.

[andpgud]

that's a throttle body, i thought you were asking about a spacer.

I was asking about a spcer and there I asked what you thought about that TB

[sharpxmen]

I was asking about a spcer and there I asked what you thought about that TB

looks like a 62 mm but is hard to tell for sure as it's quite dark and dirty. If you go with it you'll need to swap the IAC and it's housing from your 2.5 t/b.

[sharpxmen]

I was asking about a spcer and there I asked what you thought about that TB

looked at it again and could be just a regular 4.0L t/b, a backside pic would probably be more relevant.

[andpgud]

How wide is the regular one?
Its 62mm right?

[sharpxmen]

How wide is the regular one?
Its 62mm right?

i think it's 60 up top and 55 or 56 on the bottom (manifold side)

[quicksand]

You are right as far as a 4.0L TB goes it is 60mm on top and 55mm on bottom. On a stock 2.5L TB it is 55mm top and 48mm bottom. Stock 2.5L intake manifold bore is 51mm. I run a stock 4.0L TB on my 4 banger and bored out my stock intake manifold from 51mm to 55mm. I Run a custom TB spacer which is 60mm top side and tapers to 55mm bottom side. Helps keep air presurized coming in which maintains torque through out the power band. Works for me.

[quicksand]

O yeah the 4.0L stock intake manifold bore is 58mm, just some nice info to have.